2.loosen the soil ,promote the growth of plants.
3.Heat insulation, sound insulation board, fire insulation.
Name | Date | Result | |
Apprance | Raw or Expand vermiculite | ||
SiO2 | 37.5-42% | 41 | |
Ai2O3 | 9-17% | 15.3 | |
MgO | 11-23% | 22 | |
Fe2O3 | 3.5-17 | 11.8 | |
CaO | 1-1.14% | 1.09 |
Size(mm) | Density(g/ml) | Moisture | Expanding Times | Impurity |
0.3-1mm | 0.89-0.95 | 1-2% | 7Times | 16-20% |
0.5-1.5mm | 0.8-1.04 | 1-2% | 7-8Times | 15-18% |
1.5-2.5mm | 0.9-1.0 | 1-2% | 7-8Times | 15-18% |
3-6mm | 0.9-1.0 | 1-2% | 7times | 15-18% |